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package org.glassfish.jersey.server.mvc;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Used to annotate JAX-RS resources and resource methods to provide reference to an error template if an exception has been
 * raised during processing a request (resource method invocation).
 * <p/>
 * The processing of this annotation is similar to the processing of {@link Template} annotation with the difference that the
 * thrown exception (or an object derived from the exception) is used as a model for the defined template.
 * <p/>
 * By default every {@link Exception exception} is mapped to a viewable and passed to the MVC runtime for further processing.
 * <p/>
 * Note: The {@link ErrorTemplate} annotation can be used even in case when neither {@link Viewable viewable} is used as return
 * value of a resource method nor {@link Template} annotation is used to annotate the resource method or resource class.
 *
 * @author Michal Gajdos
 * @see Template
 * @see org.glassfish.jersey.server.mvc.spi.AbstractErrorTemplateMapper
 * @since 2.3
 */
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE, ElementType.METHOD})
@Documented
public @interface ErrorTemplate {

    /**
     * The template name that should be used to display an error raised during processing a request. The template name may be
     * declared as absolute template name if the name begins with a '/', otherwise the template name is recognized to be relative.
     */
    String name() default "";
}
